کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6297649 | 1617776 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Soil profile dismantlement by land levelling and deep tillage damages soil functioning but not quality
ترجمه فارسی عنوان
تخریب مشخصات خاک از طریق سطح زمین و خاک ورزی عمیق خسارت خاک را کاهش می دهد اما کیفیت ندارد
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کلمات کلیدی
خاک های انسانی شاخص های زیستی خاک، کربن استخر، فعالیت های آنزیمی خاص، فاکتورهای میکروبی، اسیدهای چرب فسفولیپید،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
We investigated the effects of land levelling followed by deep tillage, thus inducing a drastic dismantlement of soil profile, on both soil functioning and quality by monitoring various bioindicators (microbial biomass and community structure, basal respiration, enzyme activities) expressed on either whole soil and TOC mass units, respectively. As expected, in disturbed soils all measured properties had much higher coefficients of variation (CVs), regardless of either whole soil or TOC mass basis, due to the induced spatial variability. The amount of total organic C in the first cubic meter of soil profile was of one order of magnitude greater in undisturbed soils compared to disturbed ones. Soil bioindicators monitored on whole soil mass basis appeared greatly worsened while unchanged or even improved under TOC mass basis. This was essentially due to a couple of reasons: (1) soil bioindicators are constitutively dependent on soil TOC content; (2) soil spatial rearrangement may have made some organic C available to microbial biomass, otherwise unreachable when allocated throughout the undisturbed soil profile. Concluding, our work highlighted the need of expressing soil biondicators on soil mass basis when the response of the whole agrosystem to soil deep spatial rearrangement has to be assessed, while on TOC mass basis if the soil biological features are the major concerns.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Soil Ecology - Volume 107, November 2016, Pages 298-306
Journal: Applied Soil Ecology - Volume 107, November 2016, Pages 298-306
نویسندگان
Vito Armando Laudicina, Eristanna Palazzolo, Anna Piotrowska-DÅugosz, Luigi Badalucco,